Ignition Module; Spark Plug Boot; Ignition Lead - Stihl FS 240 Service Manual

Using the ZAT 3 ignition system
tester 5910 850 4520
1
3
2
– Before starting the test, install a
new spark plug and tighten it
down firmly.
: Connect the spark plug boot to
the terminal (2)
: Attach ground terminal (1) to the
spark plug
: Use adjusting knob (4) to set
spark gap to approx. 2 mm,
see window (3)
1
3 4
2
While using the ZAT 3, hold it only
by the handle (4) or position it in a
safe place. Keep fingers or other
parts of your body at least 1 cm
away from the spark window (3),
high-voltage connection (2), ground
connection (5) and the ground
terminal (1).
Danger! High voltage – risk of
electrocution.
FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M
– Crank the engine quickly with the
rewind starter and check
sparkover in the window (3) of
the ignition system tester
The engine may start and
accelerate during the test.
If a spark is visible in the
window (3), the ignition system is in
order.
– If no spark is visible in the
4
window (3), check the ignition
system with the aid of the
troubleshooting chart, b 6.7
6.4 Spark plug boot / ignition
lead
Ignition module and ignition lead
form a complete unit. If the ignition
lead is damaged, the ignition
module must be replaced.
– Remove shroud, b 5.4
– Unplug the spark plug boot
5
: Pull out cable holder (1)
: Open and remove cable
holder (1)
: Use suitable pliers to pull the
torsion spring out of the spark
plug boot
– Unhook the torsion spring from
the ignition lead
– Pull the boot off the ignition lead
1
1
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